Multi-Layered Coatings

04.15.14

U.S. 8,568,833 B2
Kansai Paint has been granted a patent for a process for formation of a multi-layered coating film, which sequentially is comprised of the following steps (1)-(4): (1) a step of coating an organic solvent-based first colored coating composition (A) on an object to be coated to form an uncured first colored coating film, (2) a step of coating an organic solvent-based second colored coating composition (B) on the uncured first colored coating film formed in the step (1) to form an uncured second colored coating film, (3) a step of coating a clear coating composition (C) on the uncured second colored coating film formed in the step (2) to form a clear coating film, and (4) a step of heating the uncured first colored coating film, the uncured second colored coating film and the uncured clear coating film formed in the steps (1)-(3) to cure these three films simultaneously; wherein the organic solvent-based first colored coating composition (A) is a coating composition containing (a1) a polyester resin containing a hydroxyl group, which contains a straight-chain alkylene group having a carbon number of 4 or more in the molecule in a content of 1.0-8.0 mol per 1 kg of a solid content of the polyester resin (a1), has a hydroxyl group value in a range of 30-160 mgKOH/g and has a number-average molecular weight in a range of 1,000-6,000, and (a2) a melamine resin; and the organic solvent-based second colored coating composition (B) is a coating composition containing (b1) an acrylic resin containing a hydroxyl group, which has a hydroxyl group value in a range of 40-200 mgKOH/g and has a weight-average molecular weight in a range of 3,000-15,000, (b2) a melamine resin having a content rate of a mononuclear melamine of 40 mass % and (b3) an acid catalyst.

Related Patents

U.S. 8,632,856 B2
3M Innovative Properties Company has been granted a patent for a method for making a coated article, which method is comprised of providing a substrate; providing microparticles of a partially or fully fluorinated polymer and provid…

.S. 8,632,857 B2
Valspar Sourcing Inc. has been awarded a patent for a method of coating a metal substrate with a hardenable packaging coating system comprised of applying an under-coat composition to a metal substrate, the under-coat composition con…

U.S. 8,633,293 B2
GM Global Technology Operations has been granted a patent for a polymer comprised of a reaction product of an epoxy resin; a first crosslinking agent reactive with the epoxy resin and having a first molecular weight; and a second cr…

U.S. 8,632,895 B2
PPG has obtained a patent for a coated article comprised of a decorative metal substrate having a specular gloss greater than 400, with the proviso that the decorative metal substrate does not contain a pigmented coating thereon, a…

U.S. 8,628,827 B2
Nof Metal Coatings Europe has been granted a patent for a method for forming a coated metallic substrate having an anticorrosion coating. The method is comprised of obtaining a coating composition including from 0.3 percent to 24 pe…

U.S. 8,629,207 B2
BASF has obtained a patent for a n aqueous coating formulation comprised of a substituted, branched polyethyleneimine, which is obtained by a process comprised of reacting a branched polyethyleneimine having a weight-average molecul…

U.S. 8,629,210 B2
NDSU Research Foundation has been awarded a patent for a pentablock copolymer prepared from atom transfer radical polymerization of a Poly(dimethylsiloxane)-Poly(ethyleneoxide)-Br macroinitiator and [2-(Methacryloyloxy)ethyl]dimethy…

Valspar has obtained a patent for a method comprised of the steps of: (a) providing a latex-based coating composition that includes one or more polymers, wherein the one or more polymers are formed by polymerizing one or more ethylenically unsaturate…

U.S. 8,623,526 B2
Guizhou University has been awarded a patent for a gradient bioceramic coating, wherein the gradient bioceramic coating is prepared with powdery titanium, and powdery composite ceramics, wherein the powdery composite ceramics is com…

NEI Corporation announced that the USPTO has issued a notice of allowance for its patent for a self-healing coating technology. The allowed claims describe an environmentally benign, conversion coating formulation, specifically applicable to copper a…

U.S. 8,623,460 B2
Valspar has been granted a patent for a method for making an article comprised of providing a substrate comprised of at least one of ceramic, glass and polymeric materials; contacting a surface of tbe substrate with a solution compr…

U.S. 8,623,461 B2
MT Coatings LLC has obtained a patent for a coating process for protecting a surface of a substantially chromium-free metal component, the coating process is comprised of combining a substantially chromium-free silicon-containing fl…

AkzoNobel has been granted a patent for a water-redispersible polymer powder composition containing at least one modified natural latex obtained by mixing and reacting natural latex with at least one radical initiator and/or with at least one oxidizi…

U.S. 8,623,480 B2
H.B. Fuller has been granted a patent for a hot melt adhesive composition comprised of at least 55 percent by weight of a first polymer consisting of a non functionalized amorphous poly alpha olefin polymer comprising greater than a…

U.S. 8,623,504 B2
Teknologian Tutkimuskeskus VTT has been granted a patent for particles of a polysaccharide derivative, having at least one substituent with conjugated unsaturated bonds and exhibiting an index of refraction in excess of 1.50, compri…